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/*
 * Copyright (C) 2013-2015 RoboVM AB
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.bugvm.apple.foundation;

/**/
import java.io.*;
import java.nio.*;
import java.util.*;
import com.bugvm.objc.*;
import com.bugvm.objc.annotation.*;
import com.bugvm.objc.block.*;
import com.bugvm.rt.*;
import com.bugvm.rt.annotation.*;
import com.bugvm.rt.bro.*;
import com.bugvm.rt.bro.annotation.*;
import com.bugvm.rt.bro.ptr.*;
import com.bugvm.apple.corefoundation.*;
import com.bugvm.apple.uikit.*;
import com.bugvm.apple.coretext.*;
import com.bugvm.apple.coreanimation.*;
import com.bugvm.apple.coredata.*;
import com.bugvm.apple.coregraphics.*;
import com.bugvm.apple.coremedia.*;
import com.bugvm.apple.security.*;
import com.bugvm.apple.dispatch.*;
/**/

/**/

/**/
/**/@Library("Foundation") @NativeClass/**/
/**/public/**/ class /**/NSSet/**/ 
    extends /**/NSObject/**/ 
    /**/implements NSFastEnumeration, Set/**/ {

    public static class NSSetPtr extends Ptr, NSSetPtr> {}
    
    public static class AsSetMarshaler {
        @MarshalsPointer
        public static Set toObject(Class cls, long handle, long flags) {
            return (NSSet) NSObject.Marshaler.toObject(cls, handle, flags);
        }
        @SuppressWarnings("unchecked")
        @MarshalsPointer
        public static long toNative(Set l, long flags) {
            if (l == null) {
                return 0L;
            }
            NSSet o = null;
            if (l instanceof NSSet) {
                o = (NSSet) l;
            } else {
                o = new NSSet((Set) l);
            }
            return NSObject.Marshaler.toNative(o, flags);
        }
    }
    
    public static class AsStringSetMarshaler {
        @MarshalsPointer
        public static Set toObject(Class cls, long handle, long flags) {
            NSSet o = (NSSet) NSObject.Marshaler.toObject(cls, handle, flags);
            return o.asStringSet();
        }
        @MarshalsPointer
        public static long toNative(Set l, long flags) {
            if (l == null) {
                return 0L;
            }
            return NSObject.Marshaler.toNative(NSSet.fromStrings(l), flags);
        }
    }
    
    public static class AsStringListMarshaler {
        @MarshalsPointer
        public static List toObject(Class cls, long handle, long flags) {
            NSSet o = (NSSet) NSObject.Marshaler.toObject(cls, handle, flags);
            return o.asStringList();
        }
        @MarshalsPointer
        public static long toNative(List l, long flags) {
            if (l == null) {
                return 0L;
            }
            return NSObject.Marshaler.toNative(NSSet.fromStrings(l), flags);
        }
    }
    
    static class SetAdapter extends AbstractSet {
        protected final NSSet set;

        SetAdapter(NSSet set) {
            this.set = set;
        }

        @Override
        public boolean contains(Object o) {
            if (o instanceof NSObject) {
                return set.isMember((NSObject) o) != null;
            }
            return false;
        }

        @Override
        public Iterator iterator() {
            return new NSEnumerator.Iterator(set.objectEnumerator());
        }

        @Override
        public int size() {
            return (int) set.getCount();
        }
    }
    
    /**/static { ObjCRuntime.bind(NSSet.class); }/**/
    /**//**/

    private AbstractSet adapter = createAdapter();
    
    /**/
    public NSSet() {}
    protected NSSet(SkipInit skipInit) { super(skipInit); }
    /**/
    
    public NSSet(Collection c) {
        super((SkipInit) null);
        if (c instanceof NSArray) {
            initObject(init((NSArray) c));
        } else if (c instanceof NSSet) {
            initObject(init((NSSet) c));
        } else {
            NSObject[] objects = c.toArray(new NSObject[c.size()]);
            initWithObjects(objects);
        }
    }
    
    public NSSet(T ... objects) {
        super((SkipInit) null);
        initWithObjects(objects);
    }
    
    /**/
    @Property(selector = "count")
    protected native @MachineSizedUInt long getCount();
    @Property(selector = "allObjects")
    public native NSArray getValues();
    /**/
    /**//**/
    
    protected static void checkNull(Object o) {
        if (o == null) {
            throw new NullPointerException("null values are not allowed in NSSet. Use NSNull instead.");
        }
    }
    
    private void initWithObjects(NSObject[] objects) {
        VoidPtr.VoidPtrPtr ptr = Struct.allocate(VoidPtr.VoidPtrPtr.class, objects.length);
        for (int i = 0; i < objects.length; i++) {
            checkNull(objects[i]);
            ptr.set(objects[i].getHandle());
            ptr = ptr.next();
        }
        ptr = ptr.previous(objects.length);
        initObject(init(ptr.getHandle(), objects.length));
    }

    protected AbstractSet createAdapter() {
        return new SetAdapter(this);
    }
    
    @Override
    protected void afterMarshaled(int flags) {
        if (adapter == null) {
            adapter = createAdapter();
        }
        super.afterMarshaled(flags);
    }
    
    public boolean add(T e) {
        return adapter.add(e);
    }
    public boolean addAll(Collection c) {
        return adapter.addAll(c);
    }
    public void clear() {
        adapter.clear();
    }
    public boolean contains(Object o) {
        return adapter.contains(o);
    }
    public boolean containsAll(Collection c) {
        return adapter.containsAll(c);
    }
    public boolean isEmpty() {
        return adapter.isEmpty();
    }
    public Iterator iterator() {
        return adapter.iterator();
    }
    public boolean remove(Object o) {
        return adapter.remove(o);
    }
    public boolean removeAll(Collection c) {
        return adapter.removeAll(c);
    }
    public boolean retainAll(Collection c) {
        return adapter.retainAll(c);
    }
    public int size() {
        return adapter.size();
    }
    public Object[] toArray() {
        return adapter.toArray();
    }
    public  U[] toArray(U[] a) {
        return adapter.toArray(a);
    }
    
    /**
     * Use this method to convert a NSSet of NSString items to a Set of String items. 
     * Elements of this NSASet must be of type NSString, otherwise an exception will be thrown.
     * @return
     * @throws UnsupportedOperationException when the set items are not of type NSString.
     */
    public Set asStringSet() {
        Set set = new HashSet<>();
        if (size() == 0) 
            return set;
        if (!(any() instanceof NSString)) 
            throw new UnsupportedOperationException("items must be of type NSString");
        
        for (T str : this) {
            set.add(str.toString());
        }
        return set;
    }
    
    public List asStringList() {
        List list = new ArrayList<>();
        if (size() == 0)
            return list;
        if (!(any() instanceof NSString)) 
            throw new UnsupportedOperationException("items must be of type NSString");
        
        for (T str : this) {
            list.add(str.toString());
        }
        return list;
    }
    
    public static NSSet fromStrings (String... strings) {
        int length = strings.length;
        NSString[] nsStrings = new NSString[length];

        for (int i = 0; i < length; i++) {
            nsStrings[i] = new NSString(strings[i]);
        }
        return new NSSet(nsStrings);
    }

    public static NSSet fromStrings (Collection strings) {
        NSString[] nsStrings = new NSString[strings.size()];

        int i = 0;
        for (String s : strings) {
            nsStrings[i] = new NSString(s);
            i++;
        }
        return new NSSet(nsStrings);
    }
    
    /**/
    @Method(selector = "member:")
    protected native NSObject isMember(NSObject object);
    @Method(selector = "objectEnumerator")
    protected native NSEnumerator objectEnumerator();
    @Method(selector = "initWithObjects:count:")
    protected native @Pointer long init(@Pointer long objects, @MachineSizedUInt long cnt);
    @Method(selector = "anyObject")
    public native T any();
    @Method(selector = "initWithSet:")
    protected native @Pointer long init(NSSet set);
    @Method(selector = "initWithArray:")
    protected native @Pointer long init(NSArray array);
    /**/
}